package com.example.wei.mvp.util;

import android.content.Context;
import android.content.SharedPreferences;
import android.text.TextUtils;

import com.example.wei.mvp.base.App;

import org.apache.commons.codec.binary.Base64;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.StreamCorruptedException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Map;

public class SPUtils
{
	public SPUtils()
	{
		/* cannot be instantiated */
		throw new UnsupportedOperationException("cannot be instantiated");
	}

	/**
	 * 保存在手机里面的文件名
	 */
	public static final String FILE_NAME = "share_data";


	/**
	 * 获取一个string
	 * @param
	 * @param key
	 * @return
	 */
	public static String getString(String key){
		SharedPreferences sp  = App.getInstance().getSharedPreferences(FILE_NAME, Context.MODE_PRIVATE);
		String userPhone = (String) SPUtils.getComonSp("userPhone", "");
		key=key+userPhone;
		return sp.getString(key, "");
	}

	/**
	 * 保存数据的方法，我们需要拿到保存数据的具体类型，然后根据类型调用不同的保存方法
	 *  @param
	 * @param key
	 * @param object
	 */
	public static int put(String key, Object object)
	{
		Context contextAll = App.getInstance();
		String userPhone = (String) SPUtils.getComonSp("userPhone", "");
		key=key+userPhone;
		SharedPreferences sp = contextAll.getSharedPreferences(FILE_NAME,
				Context.MODE_PRIVATE);
		SharedPreferences.Editor editor = sp.edit();

		if (object instanceof String)
		{
			editor.putString(key, (String) object);
		} else if (object instanceof Integer)
		{
			editor.putInt(key, (Integer) object);
		} else if (object instanceof Boolean)
		{
			editor.putBoolean(key, (Boolean) object);
		} else if (object instanceof Float)
		{
			editor.putFloat(key, (Float) object);
		} else if (object instanceof Long)
		{
			editor.putLong(key, (Long) object);
		} else
		{
			editor.putString(key, object.toString());
		}

		SharedPreferencesCompat.apply(editor);
		return 0;
	}

	public static int putComonSp(String key, Object object)
	{
		Context contextAll = App.getInstance();
		SharedPreferences sp = contextAll.getSharedPreferences(FILE_NAME,
				Context.MODE_PRIVATE);
		SharedPreferences.Editor editor = sp.edit();

		if (object instanceof String)
		{
			editor.putString(key, (String) object);
		} else if (object instanceof Integer)
		{
			editor.putInt(key, (Integer) object);
		} else if (object instanceof Boolean)
		{
			editor.putBoolean(key, (Boolean) object);
		} else if (object instanceof Float)
		{
			editor.putFloat(key, (Float) object);
		} else if (object instanceof Long)
		{
			editor.putLong(key, (Long) object);
		} else
		{
			editor.putString(key, object.toString());
		}

		SharedPreferencesCompat.apply(editor);
		return 0;
	}


	/**
	 * 得到保存数据的方法，我们根据默认值得到保存的数据的具体类型，然后调用相对于的方法获取值
	 * 
	 * @param
	 * @param key
	 * @param defaultObject
	 * @return
	 */
	public static Object get( String key, Object defaultObject)
	{
		Context contextAll = App.getInstance();
		String userPhone = (String) SPUtils.getComonSp("userPhone", "");
		key=key+userPhone;
		SharedPreferences sp = contextAll.getSharedPreferences(FILE_NAME,
				Context.MODE_PRIVATE);

		if (defaultObject instanceof String)
		{
			return sp.getString(key, (String) defaultObject);
		} else if (defaultObject instanceof Integer)
		{
			return sp.getInt(key, (Integer) defaultObject);
		} else if (defaultObject instanceof Boolean)
		{
			return sp.getBoolean(key, (Boolean) defaultObject);
		} else if (defaultObject instanceof Float)
		{
			return sp.getFloat(key, (Float) defaultObject);
		} else if (defaultObject instanceof Long)
		{
			return sp.getLong(key, (Long) defaultObject);
		}

		return null;
	}

	/**
	 * 得到保存数据的方法，我们根据默认值得到保存的数据的具体类型，然后调用相对于的方法获取值
	 *
	 * @param
	 * @param key
	 * @param defaultObject
	 * @return
	 */
	public static Object getComonSp( String key, Object defaultObject)
	{
		Context contextAll = App.getInstance();
		SharedPreferences sp = contextAll.getSharedPreferences(FILE_NAME,
				Context.MODE_PRIVATE);

		if (defaultObject instanceof String)
		{
			return sp.getString(key, (String) defaultObject);
		} else if (defaultObject instanceof Integer)
		{
			return sp.getInt(key, (Integer) defaultObject);
		} else if (defaultObject instanceof Boolean)
		{
			return sp.getBoolean(key, (Boolean) defaultObject);
		} else if (defaultObject instanceof Float)
		{
			return sp.getFloat(key, (Float) defaultObject);
		} else if (defaultObject instanceof Long)
		{
			return sp.getLong(key, (Long) defaultObject);
		}

		return null;
	}


	/**
	 * 移除某个key值已经对应的值
	 * 
	 * @param
	 * @param key
	 */
	public static void remove( String key)
	{
		SharedPreferences sp = App.getInstance().getSharedPreferences(FILE_NAME,
				Context.MODE_PRIVATE);
		SharedPreferences.Editor editor = sp.edit();
		editor.remove(key);
		SharedPreferencesCompat.apply(editor);
	}

	/**
	 * 清除所有数据
	 * 
	 * @param context
	 */
	public static void clear(Context context)
	{
		SharedPreferences sp = App.getInstance().getSharedPreferences(FILE_NAME,
				Context.MODE_PRIVATE);
		SharedPreferences.Editor editor = sp.edit();
		editor.clear();
		SharedPreferencesCompat.apply(editor);
	}

	/**
	 * 查询某个key是否已经存在
	 * 
	 * @param
	 * @param key
	 * @return
	 */
	public static boolean contains( String key)
	{
		SharedPreferences sp = App.getInstance().getSharedPreferences(FILE_NAME,
				Context.MODE_PRIVATE);
		return sp.contains(key);
	}

	/**
	 * 返回所有的键值对
	 * 
	 * @param context
	 * @return
	 */
	public static Map<String, ?> getAll(Context context)
	{
		SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
				Context.MODE_PRIVATE);
		return sp.getAll();
	}



	/**
	 * 创建一个解决SharedPreferencesCompat.apply方法的一个兼容类
	 * 
	 * @author zhy
	 * 
	 */
	private static class SharedPreferencesCompat
	{
		private static final Method sApplyMethod = findApplyMethod();

		/**
		 * 反射查找apply的方法
		 * 
		 * @return
		 */
		@SuppressWarnings({ "unchecked", "rawtypes" })
		private static Method findApplyMethod()
		{
			try
			{
				Class clz = SharedPreferences.Editor.class;
				return clz.getMethod("apply");
			} catch (NoSuchMethodException e)
			{
			}

			return null;
		}

		/**
		 * 如果找到则使用apply执行，否则使用commit
		 * 
		 * @param editor
		 */
		public static void apply(SharedPreferences.Editor editor)
		{
			try
			{
				if (sApplyMethod != null)
				{
					sApplyMethod.invoke(editor);
					return;
				}
			} catch (IllegalArgumentException e)
			{
			} catch (IllegalAccessException e)
			{
			} catch (InvocationTargetException e)
			{
			}
			editor.commit();
		}
	}




	/**
	 * 读取一个对象
	 *
	 * @param context
	 * @return
	 */
	public static Object readObj(Context context, String key) {
		Object obj = null;
		SharedPreferences prefe = context.getSharedPreferences(FILE_NAME,Context.MODE_PRIVATE);
		String replysBase64 = prefe.getString(key, "");
		if (TextUtils.isEmpty(replysBase64)) {
			return obj;
		}
		// 读取字节
		byte[] base64 = Base64.decodeBase64(replysBase64.getBytes());
		// 封装到字节读取流
		ByteArrayInputStream bais = new ByteArrayInputStream(base64);
		try {
			// 封装到对象读取流
			ObjectInputStream ois = new ObjectInputStream(bais);
			try {
				// 读取对象
				obj = ois.readObject();
			} catch (ClassNotFoundException e) {
				e.printStackTrace();
			}
		} catch (StreamCorruptedException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}

		return obj;
	}

	/**
	 * 存储一个对象
	 *
	 * @param context
	 * @param key
	 */
	public static <T> void saveObj(Context context, T obj, String key) {
		T _obj = obj;

		SharedPreferences prefe = context.getSharedPreferences(FILE_NAME, Context.MODE_PRIVATE);
		// 创建字节输出流
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		try {
			// 创建对象输出流,封装字节流
			ObjectOutputStream oos = new ObjectOutputStream(baos);
			// 将对象写入字节流
			oos.writeObject(_obj);
			// 将字节流编码成base64的字符串
			String list_base64 = new String(Base64.encodeBase64(baos.toByteArray()));
			SharedPreferences.Editor editor = prefe.edit();
			editor.putString(key, list_base64);
			editor.commit();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}